Dutch Mennonites founded the settlement of Kommerau on the left bank of the Vistula River in ca. 1570. Land leases of 1604, 1656, 1684, and 1773 have been preserved. In 1623 the Mennonites of Kommerau obtained exemption from military taxes and quartering of soldiers.

Until 1772 Kommerau was located in what was known as Royal Prussia (also known as Polish Prussia) in the Kingdom of Poland. The First Partition of Poland in 1772 resulted in the creation of a new province on 31 January 1773, called West Prussia, in which the village was located. Kommerau was situated in the district (Kreis) of Schwetz in Regierungsbezirk Marienwerder until the end of World War I, when it came under the jurisdiction of the Pomeranian Voivodeship of the Second Polish Republic. Kommerau came under the control of Nazi Germany during World War II until March 1945, when it was occupied by Soviet forces and returned to Poland. In 2013 Kommerau (now Komorsk) was a village in the administrative district of Gmina Warlubie, within Świecie County, Kuyavian-Pomeranian Voivodeship.

In 1776 there were eight Mennonite families in Kommerau with the following surnames: Baltzer, Bartel, Frantz, Funck, Goertz, Kliewer, Kopper, and Unrau. In 1824 there were 11 Mennonites identified as landholders in Kommerau, Amt Neuenburg.

Mennonites who were residents of Kommerau were members of the Montau-Gruppe Mennonite Church.